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  1. tedstruk

    5 decade old battery pack bridge

    Johnson company specially made the batteries for the radio... They are probably 222 in code. Dum question here... (really dum don't look steve...) if I have 18.8ma how far do I move the decimal left, for amps? 3 or 6? for my math.
  2. tedstruk

    5 decade old battery pack bridge

    you are tal You are talking about two different kinds of diodes... Barrier diodes and Rectifier Diodes- I think the Schottky diodes are the barrier diodes- and Zeners are a type of Schottky diode. These are rectifier diodes...I think they are supposed to have a minimal avalanche rating, and...
  3. tedstruk

    5 decade old battery pack bridge

    thats what caused the thing to blow in the first place. Wrong cap. the power required to charge the battery is 18.8mAh. The rectifier has to deliver 18.8mAh.
  4. tedstruk

    Trying to fix an old record player.

    Great help! Hey there is one other thing that you might have missed... is the belt real tight when you put it on....??? there is a second place on the turntable that the belt goes... it shouldn't be very tight, and if it is on the wrong track, it will just spin up the turntable to a really...
  5. tedstruk

    5 decade old battery pack bridge

    OK, I am batting about 20% with this... Does anyone have any 1N295 diodes laying around, they would trade for a couple of PSU transformers?
  6. tedstruk

    5 decade old battery pack bridge

    0.47 cap failed.... reads as a resistor.
  7. tedstruk

    5 decade old battery pack bridge

    for the ed... for whence the difference betwixt the two units seems to be 9uf in capacitance at the mains, the remaining components were tested. R2 onboard measures at 420.9ohms while the new Red Purple Brown Silver resistors measure at 270. here is the entire good board- D1 uf=726mv c=23pf...
  8. tedstruk

    5 decade old battery pack bridge

    NOTE FOR QUESTION: What caused then to fry??? many years ago, these were used as communications between a haul back and a donkey in a highlead logging setup. They would send a spotter up the spar tree-(spar trees are trees with all the limbs cut off that are tall and have a block and tackle on...
  9. tedstruk

    5 decade old battery pack bridge

    the diodes are 1n295 they have a rating of Vim(V)-50 Ih@Vrm = uA=200 V=10 and the rectifier is 1n881 which I am decifering as a "one pass, 18.8ma full wave rectifier"
  10. tedstruk

    5 decade old battery pack bridge

    What I need is a 14v battery pack rated at 220mA hours. and a rectifier that charges at 18mA What is a 1N881 Rectifier? guessing here.. a one pass, cathode driven 18.8mA rectifier(881 backwards)?
  11. tedstruk

    5 decade old battery pack bridge

    they are nickel metal hydride batteries. for those younger folks... NiMh pronounced N I M M or knim or gnim in English. so the schematic is... drum roll please.... I need to know what diodes to buy to replace the ones that fried. Brown Orange White Brown Yellow White
  12. tedstruk

    5 decade old battery pack bridge

    1968 model v.1 personal messenger... That recharger is 12.5 v. AA batteries are 1.5. About 11v shy a dozen... I hope I can find some good replacement batteries
  13. tedstruk

    5 decade old battery pack bridge

    Here is the good and the bad of the matter
  14. tedstruk

    5 decade old battery pack bridge

    Well my dad dug out his channel 9 walkies yesturday, and one of them wouldn't charge up. They are the old style battery pack that plugs into the 110v house socket and stays there for 16hrs then powers a big handheld emergency frequency two way radio. I got the repair manual all printed so I...
  15. tedstruk

    Ensoniq. Storcart32

    I need to build a few of these, I need a schematic, block diagram, and where I can get the parts? They are a small factor ISA port cartridge, with eeprom,
  16. tedstruk

    Sometimes a monster

    Sometimes I think I'm a monster....
  17. tedstruk

    breakers and power

    This is kind of off topic. what would cause a good 110v power into a breaker box lose all its power when you throw one of the breakers? I got 120v at the main with the 30 amp main breaker on, but as soon as I throw the 15 amp breaker, all the other circuits go dead... Now after all this, I am...
  18. tedstruk

    arduino speaking eeprom

    is there a circuit diagram and program that can make my arduino communicate and reprogram the signal in the eeprom cartridge input of the ensonic SD1 cartridge storage? The reason I need this is because they don't make blank storcarts anymore, and the system cannot store pitch tables...
  19. tedstruk

    Motorcycle Electrical System Resistor

    My 1981 xs1100 has a resistor pack in a metal case, that connects between the kill switch and the fuse box . The resistor is connected inline, like kind of in parallel on both sends to the kill switch . I wired a different resistor in, just like the wiring diagram shows, and the kill switch...
  20. tedstruk

    antient PC device connector

    Does anyone know what kind of cable the internal ZIP 100 drives used? Can I use a straight floppy or does it take a special cable?
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